[FFmpeg-devel] [PATCH 0/2] add readvitc filter

[Tobias Rapp]

On 08.04.2016 15:49, Clément Bœsch wrote:
> On Fri, Apr 08, 2016 at 10:50:23AM +0200, Tobias Rapp wrote:
>> The following patches add a filter that allows to scan video frames for VITC
>> lines, including FATE test.
>>
>> The sample file for the FATE test can be found at:
>> https://cerebrum.noa-archive.com/noacloud/public.php?service=files&t=88eeb716819bba39584be03c2d1f053b (1.4MB)
>> and is assumed to be stored as $FATE_SAMPLES/filter/sample-vitc.avi
>>
>> MD5SUM:    150ca9d1f6283f136ce14bd7a7cf025e
>> SHA256SUM: ec39eeda7587536a4c90ae14288e895defa8fc64c536eeca88b34899a963d42f
>>
>
> Hey that's pretty cool. I'll check that patch later.
>
> BTW, how about updating drawtext filter so it can pick the timecode
> information from metadata? We already have drawtext code handling
> timecode printing.

This should already be possible using a filter string like

'drawtext=fontfile=...:text=%{metadata\\:lavfi.readvitc.tc_str}'

and with the patch from [1] you can even do

'drawtext=fontfile=...:text=%{metadata\\:lavfi.readvitc.tc_str\\:--\\\\\\:--\\\\\\:--\\\\\\:--}'

Regards,
Tobias

Link:
[1] https://ffmpeg.org/pipermail/ffmpeg-devel/2016-April/192779.html